Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kuniaki Mamitsu0
Date of Patent
August 11, 2009
0Patent Application Number
119845740
Date Filed
November 20, 2007
0Patent Primary Examiner
Patent abstract
A power semiconductor device includes a power semiconductor element, a protection circuit, an inspection terminal, and an electrical conductor. The protection circuit includes multiple zener diodes connected in series between a gate and an emitter of the power semiconductor element. The protection circuit limits a voltage between the gate and emitter of the power semiconductor element, when an abnormal voltage is applied to the gate. The electrical conductor electrically connects the inspection terminal to a node between the zener diodes of the protection circuit. The zener diodes are separately inspected by using the inspection terminal.
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